Hepatobiliary Surgery Practice Questions

Q: A 52-year-old woman comes to the emergency department because of epigastric abdominal pain that started after her last meal and has become progressively worse over the past 6 hours. She has had intermittent pain similar to this before, but it has never lasted this long. Her temperature is 39°C (102.2°F). Examination shows a soft abdomen with normal bowel sounds. The patient has sudden inspiratory arrest during right upper quadrant palpation. Her alkaline phosphatase, total bilirubin, amylase, and aspartate aminotransferase levels are within the reference ranges. Abdominal imaging is most likely to show which of the following findings?

Gallstone in the cystic duct. ***Gallstone in the cystic duct*** - The patient presents with classic symptoms of **acute cholecystitis**: postprandial epigastric pain worsening over hours, fever (39°C), and a **positive Murphy's sign** (sudden inspiratory arrest during right upper quadrant palpation). In acute cholecystitis, a **gallstone** typically obstructs the **cystic duct**, leading to inflammation of the gallbladder. - The **normal liver enzymes (AST, total bilirubin, alkaline phosphatase)** and **normal amylase** rule out choledocholithiasis, cholangitis, hepatitis, and pancreatitis. Therefore, imaging would confirm the presence of a gallstone in the cystic duct and associated gallbladder inflammation. *Enlargement of the pancreas with peripancreatic fluid* - This finding suggests **acute pancreatitis**, which is unlikely given the **normal amylase levels** in this patient. - While gallstones can cause pancreatitis (gallstone pancreatitis), the specific obstructive symptoms and normal amylase point away from an active pancreatic inflammation. *Fistula formation between the gallbladder and bowel* - **Fistula formation** between the gallbladder and bowel (e.g., cholecystoenteric fistula) is a complication of chronic or severe cholecystitis and is usually associated with recurrent infections, not the acute presentation described. - This complication can lead to gallstone ileus, and patients often have a history of chronic cholecystitis rather than a first severe episode of acute pain. *Dilated common bile duct with intrahepatic biliary dilatation* - This finding would suggest **obstructive jaundice** due to a blockage in the common bile duct, such as a **choledocholithiasis** or stricture. - The patient's **normal total bilirubin and alkaline phosphatase levels** make significant common bile duct obstruction highly unlikely.

Q: 32-year-old man presented with fever and pain in upper right hypochondrium after food intake. Investigation of choice?

Ultrasound. ***Ultrasound*** - **Ultrasound** is the initial and often definitive investigation for suspected **gallbladder pathology** like cholecystitis, especially given the symptoms of fever and **right upper quadrant pain post-meals**. - It effectively visualizes **gallstones**, gallbladder wall thickening, and **pericholecystic fluid**, which are key indicators of cholecystitis. *CT scan* - A **CT scan** is generally not the first-line investigation for acute cholecystitis due to **radiation exposure** and its **lower sensitivity** for gallstones compared to ultrasound. - While it can identify complications like abscesses or perforations, it is usually reserved for **ambiguous ultrasound findings** or suspected complications. *ERCP (Endoscopic Retrograde Cholangiopancreatography)* - **ERCP** is an **invasive procedure** primarily used therapeutically for the removal of **bile duct stones** or for stent placement in cases of obstruction. - It carries risks of **pancreatitis** and perforation, making it unsuitable as an initial diagnostic tool for simple cholecystitis. *MRCP (Magnetic Resonance Cholangiopancreatography)* - **MRCP** is a **non-invasive imaging technique** that provides detailed images of the **biliary and pancreatic ducts** without radiation, primarily useful for confirming suspected bile duct stones or strictures. - While excellent for ductal anatomy, it is **not typically the first choice** for acute cholecystitis, as ultrasound is quicker, cheaper, and sufficient for initial diagnosis.

Q: Abdominal pain, fever and jaundice. This triad is known as;

Charcot's triad. ***Charcot's triad*** - **Charcot's triad** consists of **abdominal pain**, **fever**, and **jaundice**, indicating **acute cholangitis** [1]. - This triad is a hallmark of **biliary tract obstruction** with concurrent infection [1]. *Renault's triad* - This is a **distractor** name; there is no recognized medical triad called "Renault's triad." - It does not describe any specific clinical presentation or set of symptoms. *Virchow triad* - **Virchow triad** describes factors that predispose to **thrombus formation**: **endothelial injury**, **stasis**, and **hypercoagulability**. - It is associated with conditions like **deep vein thrombosis (DVT)** and **pulmonary embolism**, not cholangitis. *Saint's triad* - **Saint's triad** refers to the co-occurrence of **gallstones**, **hiatal hernia**, and **diverticulosis**. - This triad describes three unrelated gastrointestinal conditions and is distinct from the symptoms of cholangitis.

Q: An ultrasound examination shows dilated intrahepatic biliary channels with a small gallbladder. The most likely possibility is

Common bile duct stone. ***Common bile duct stone*** - A **common bile duct (CBD) stone** obstructing flow can cause **intrahepatic biliary dilation** as bile backs up into the liver. - A **small, non-distended gallbladder** suggests that the obstruction is distal to the cystic duct, preventing bile entry into the gallbladder or causing it to contract in response to a partial obstruction. *Carcinoma of the head of the pancreas* - Pancreatic head carcinoma typically causes **Courvoisier's sign**, characterized by a **palpable, non-tender, distended gallbladder** due to chronic, progressive obstruction of the distal CBD. - While it causes intrahepatic ductal dilation, the gallbladder usually appears distended, not small. *Pancreatic calculus* - A pancreatic calculus typically causes **pancreatitis** or **pain**, and may lead to **dilation of the pancreatic duct**, not primarily the biliary tree. - Unless directly causing CBD obstruction, it would not explain dilated intrahepatic biliary channels with a small gallbladder. *Gallbladder stones* - **Gallbladder stones** typically cause **cholecystitis** or **biliary colic**, and if they obstruct the cystic duct, they can cause a **distended gallbladder**. - They do not typically cause widespread intrahepatic biliary dilation unless they migrate into the common bile duct and cause obstruction there.

Q: All of the following modalities can be used for in situ ablation of liver secondaries, except:

Alcohol. ***Alcohol*** - While **percutaneous ethanol injection (PEI)** can be used for **ablation of small hepatocellular carcinomas**, it is generally not a primary modality for **in situ ablation of liver secondaries** due to less predictable ablation margins and diffusion. - Its use is more prevalent for very small, localized primary tumors or for cystic lesions, rather than for metastatic disease where more precise and extensive ablation is often required. *Radiofrequency* - **Radiofrequency ablation (RFA)** uses high-frequency electrical currents to generate heat, causing **coagulation necrosis** of tumor cells within the liver. - It is a widely accepted and effective modality for **in situ ablation of liver secondaries**, particularly for lesions up to 3-5 cm. *Ultrasonic waves* - **High-intensity focused ultrasound (HIFU)** uses focused ultrasonic waves to generate heat and destroy tumor tissue, and is an evolving non-invasive method for **liver tumor ablation**. - HIFU causes **thermal ablation** leading to coagulative necrosis and can be used for both primary and secondary liver tumors. *Cryotherapy* - **Cryoablation** involves the use of extreme cold to destroy tumor cells, typically by inserting probes into the tumor to create **ice balls**. - It is an effective method for **in situ ablation of liver secondaries**, causing **cellular injury** and **necrosis** through direct cold effects and microvascular thrombosis.

Q: Most common site of hydatid cyst in human body is:

Right postero-superior lobe of liver. ***Right postero-superior lobe of liver*** - The **liver** is the most common organ affected by hydatid cysts due to its role in filtering blood from the portal circulation, which carries ingested *Echinococcus* eggs [1]. - Within the liver, the **right lobe** is more frequently involved than the left, and specifically, the **postero-superior segments** are the most common sites [1]. *Right antero-inferior lobe of liver* - While the human **liver** is the most common organ for hydatid cysts, the **antero-inferior lobe** is less frequently affected than the postero-superior region [1]. - The distribution within the right lobe tends to favor the posterior segments for initial lodging of the parasites. *Spleen* - The **spleen** is a possible site for hydatid cysts, but it is considered a **rare** location compared to the liver and lungs. - This is because the spleen is a secondary site, usually affected when parasites bypass the liver or primary cysts rupture and spread. *Left lobe of liver* - Although the **left lobe of the liver** can be affected by hydatid cysts, it is significantly **less common** than involvement of the right lobe [1]. - The size and typical blood flow patterns favor the right lobe as the primary site of infection.

Q: Which of the following is false about hydatid cyst:

Most commonly involves lung. ***Most commonly involves lung*** - This statement is **false** because the **liver** is the most commonly involved organ in hydatid cyst disease (Echinococcosis), accounting for 60-70% of cases. - The lungs are the second most common site, seen in about 20-25% of cases. *20% saline is scolicidal* - This statement is **true** as hypertonic saline (typically 20-30%) is an effective **scolicidal agent** used during surgery or PAIR procedures. - It helps to kill the protoscolices within the cyst, reducing the risk of recurrence and anaphylaxis if spillage occurs. *PAIR is employed for hepatic hydatid cysts* - **PAIR (Puncture, Aspiration, Injection, Re-aspiration)** is a well-established and effective minimally invasive procedure for treating **hepatic hydatid cysts**. - It involves aspirating cyst fluid, injecting a scolicidal agent (like hypertonic saline or ethanol), and then re-aspirating the contents. *Ideally should be managed by pre-operative albendazole followed by surgery* - **Albendazole** is often given **pre-operatively** for several weeks (typically 4-6 weeks) to decrease cyst viability and reduce the risk of secondary hydatidosis if spillage occurs during surgery. - This combined approach of medical therapy followed by surgical excision is considered a standard for managing many hydatid cysts, particularly large or complicated ones.

Q: Pringle maneuver is used in management of -

Liver trauma. ***Liver trauma*** - The **Pringle maneuver** involves clamping the **hepatoduodenal ligament** to temporarily control bleeding from the liver by occluding the hepatic artery and portal vein. - This technique is critical during **hepatic surgery** or in managing **liver trauma** to reduce blood loss and improve surgical visibility. *Prolapsed piles* - **Prolapsed piles** (hemorrhoids) are not managed by the Pringle maneuver. Their treatment involves conservative measures, banding, or surgical excision. - The Pringle maneuver is a technique specific to the **liver's blood supply**, which is unrelated to hemorrhoids. *Spleen trauma* - **Spleen trauma** typically involves splenic repair or splenectomy, and its blood supply is controlled by clamping the splenic artery and vein directly, not via the Pringle maneuver. - The Pringle maneuver specifically targets the vessels within the **hepatoduodenal ligament**, which do not supply the spleen. *Duodenal perforation* - **Duodenal perforations** require surgical repair to close the defect and are not managed by the Pringle maneuver. - The Pringle maneuver's function is to control **hepatic blood flow**, which is not relevant to managing duodenal injury.

Q: Most common type of choledochal cyst is:

Type I. ***Type I*** - **Type I choledochal cyst** is the most common type, accounting for **80-90%** of all cases. - It involves a **fusiform dilatation** of the extrahepatic bile duct. *Type II* - **Type II choledochal cysts** are rare and present as a **diverticulum** arising from the common bile duct. - This type has a very different morphological appearance compared to the more common fusiform dilatation. *Type III* - **Type III choledochal cysts**, also known as **choledochoceles**, are dilatations within the duodenal wall near the **ampulla of Vater**. - They are much less common than Type I cysts and have a distinct anatomic location. *Type IV* - **Type IV choledochal cysts** involve **multiple dilatations** of the bile ducts, which can be extrahepatic, intrahepatic, or both. - While more complex, they are less prevalent than the single, fusiform dilatation seen in Type I cysts.

Q: A 52-year-old woman presents with jaundice, pale stools, and a palpable gallbladder. MRCP shows a dilated bile duct but no stones. What is the next best step?

CT scan of the abdomen. ***CT scan of the abdomen*** - The combination of **jaundice**, **pale stools**, a **palpable gallbladder**, and a **dilated bile duct without stones** (Courvoisier's sign) strongly suggests an obstructing mass in the head of the pancreas or distal common bile duct. - A **CT scan of the abdomen** is the initial investigation of choice to visualize and stage potential pancreatic or biliary malignancies. *Liver biopsy* - A liver biopsy is typically performed to evaluate **parenchymal liver disease** or unexplained liver enzyme elevations, not primarily for obstructive jaundice. - It would not identify the cause of the obstruction in the bile duct. *ERCP with biopsy* - **ERCP (Endoscopic Retrograde Cholangiopancreatography)** is both diagnostic and therapeutic, often used to retrieve stones or place stents. - While it could provide a biopsy, it is a more invasive procedure and usually reserved after less invasive imaging like CT has localized the likely obstruction. *Cholecystectomy* - **Cholecystectomy (gallbladder removal)** is indicated for symptomatic gallstones or gallbladder polyps. - In this case, the problem is not within the gallbladder itself, but rather an obstruction of the common bile duct, indicated by the dilated bile duct and absence of stones.

Question 1

A 52-year-old woman comes to the emergency department because of epigastric abdominal pain that started after her last meal and has become progressively worse over the past 6 hours. She has had intermittent pain similar to this before, but it has never lasted this long. Her temperature is 39°C (102.2°F). Examination shows a soft abdomen with normal bowel sounds. The patient has sudden inspiratory arrest during right upper quadrant palpation. Her alkaline phosphatase, total bilirubin, amylase, and aspartate aminotransferase levels are within the reference ranges. Abdominal imaging is most likely to show which of the following findings?

Accepted Answer

Gallstone in the cystic duct

Answer

Enlargement of the pancreas with peripancreatic fluid

Answer

Fistula formation between the gallbladder and bowel

Answer

Dilated common bile duct with intrahepatic biliary dilatation

Question 2

32-year-old man presented with fever and pain in upper right hypochondrium after food intake. Investigation of choice?

Accepted Answer

Ultrasound

Answer

CT scan

Answer

ERCP (Endoscopic Retrograde Cholangiopancreatography)

Answer

MRCP (Magnetic Resonance Cholangiopancreatography)

Question 3

Abdominal pain, fever and jaundice. This triad is known as;

Accepted Answer

Charcot's triad

Answer

Renault's triad

Answer

Virchow triad

Answer

Saint's triad

Question 4

An ultrasound examination shows dilated intrahepatic biliary channels with a small gallbladder. The most likely possibility is

Accepted Answer

Common bile duct stone

Answer

Carcinoma of the head of the pancreas

Answer

Pancreatic calculus

Answer

Gallbladder stones

Question 5

All of the following modalities can be used for in situ ablation of liver secondaries, except:

Accepted Answer

Alcohol

Answer

Radiofrequency

Answer

Ultrasonic waves

Answer

Cryotherapy

Question 6

Most common site of hydatid cyst in human body is:

Accepted Answer

Right postero-superior lobe of liver

Answer

Right antero-inferior lobe of liver

Answer

Spleen

Answer

Left lobe of liver

Question 7

Which of the following is false about hydatid cyst:

Accepted Answer

Most commonly involves lung

Answer

20% saline is scolicidal

Answer

PAIR is employed for hepatic hydatid cysts

Answer

Ideally should be managed by pre-operative albendazole followed by surgery

Question 8

Pringle maneuver is used in management of -

Accepted Answer

Liver trauma

Answer

Prolapsed piles

Answer

Spleen trauma

Answer

Duodenal perforation

Question 9

Most common type of choledochal cyst is:

Accepted Answer

Type I

Answer

Type II

Answer

Type III

Answer

Type IV

Question 10

A 52-year-old woman presents with jaundice, pale stools, and a palpable gallbladder. MRCP shows a dilated bile duct but no stones. What is the next best step?

Accepted Answer

CT scan of the abdomen

Answer

Liver biopsy

Answer

ERCP with biopsy

Answer

Cholecystectomy

Hepatobiliary Surgery — MCQs

Hepatobiliary Surgery — MCQs

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